1st Grade · Logic & Problem Solving
Crack the Code
Free printable 1st Grade logic & problem solving worksheet: Crack the Code. It practices secret code (Common Core 1.OA.C.6). For ages 6-7. Download the PDF, print it, or fill it in online.
Fill in or color online- Grade
- 1st Grade
- Subject
- Logic & Problem Solving
- Skill
- Secret code
- Ages
- 6–7
- Standard
- 1.OA.C.6
- Format
- A4 PDF · print or fill in online
About this worksheet
“Crack the Code” is sheet 24 of 25 in our free 1st Grade Logic & Problem Solving Worksheets collection, written for children aged 6–7. It focuses on secret code.
In the set it comes after “Coin Riddles” and before “Find the Path Sum”. Working through them in that order, one sheet a day, builds the skill a step at a time.
What this worksheet practices
1.OA.C.6 · Common Core Math · Grade 1
Operations & Algebraic Thinking
Children work on understanding what addition and subtraction mean, solving word problems with them, and building fluency with adding and subtracting.
How to use this worksheet
- 1
On the logic grid sheet, show your child how one ✓ means ✗ everywhere else in that row and column. Once they see it, the puzzles solve themselves.
- 2
Use real objects on a coat hanger or kitchen scale before "Balance the Scales" so "equal" means the same on both sides, not "the answer comes next".
- 3
After "Follow the Arrow Code", let your child write arrow directions for you to follow around the room. Giving exact instructions is harder than following them.
